/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jms.example.wildcard.consumer;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQTopic;

import javax.jms.*;
import java.util.Scanner;

/**
 * @author <a href="http://www.christianposta.com/blog">Christian Posta</a>
 */
public class Client {
	private static final Boolean NON_TRANSACTED = false;
	private static final String BROKER_URL = "tcp://localhost:61616";

	public static void main(String[] args) {
		String url = BROKER_URL;
		if (args.length > 0) {
			url = args[0].trim();
		}
		ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
		Connection connection = null;

		try {
			Topic senderTopic = new ActiveMQTopic(System.getProperty("topicName"));

			connection = connectionFactory.createConnection("admin", "password");

			Session senderSession = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
			MessageProducer sender = senderSession.createProducer(senderTopic);

			Session receiverSession = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);

			String policyType = System.getProperty("wildcard", ".*");
			String receiverTopicName = senderTopic.getTopicName() + policyType;
			Topic receiverTopic = receiverSession.createTopic(receiverTopicName);

			MessageConsumer receiver = receiverSession.createConsumer(receiverTopic);
			receiver.setMessageListener(new MessageListener() {
				public void onMessage(Message message) {
					try {
						if (message instanceof TextMessage) {
							String text = ((TextMessage) message).getText();
							System.out.println("We received a new message: " + text);
						}
					} catch (JMSException e) {
						System.out.println("Could not read the receiver's topic because of a JMSException");
					}
				}
			});

			connection.start();
			System.out.println("Listening on '" + receiverTopicName + "'");
			System.out.println("Enter a message to send: ");

			Scanner inputReader = new Scanner(System.in);

			while (true) {
				String line = inputReader.nextLine();
				if (line == null) {
					System.out.println("Done!");
					break;
				} else if (line.length() > 0) {
					try {
						TextMessage message = senderSession.createTextMessage();
						message.setText(line);
						System.out.println("Sending a message: " + message.getText());
						sender.send(message);
					} catch (JMSException e) {
						System.out.println("Exception during publishing a message: ");
					}
				}
			}

			receiver.close();
			receiverSession.close();
			sender.close();
			senderSession.close();
			inputReader.close();
		} catch (Exception e) {
			System.out.println("Caught exception!");
		} finally {
			if (connection != null) {
				try {
					connection.close();
				} catch (JMSException e) {
					System.out.println("When trying to close connection: ");
				}
			}
		}

	}
}